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Share-Based Payments - Additional Information (Detail) (USD $)
Share data in Millions, except Per Share data, unless otherwise specified
3 Months Ended
May 03, 2014
May 04, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based compensation $ 3,188,000 $ 5,289,000
Share-based compensation, net of tax 2,000,000 3,300,000
Weighted-average grant date fair value of stock options granted $ 3.99 $ 3.42
Aggregate intrinsic value of options exercised 1,000,000 500,000
Net proceeds from stock options exercised 6,755,000 1,523,000
Tax benefit realized from stock option exercises (700,000) 7,900,000
Shares available for all equity grants 16.6  
Employee Stock Option
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Unrecognized compensation expense 500,000  
Unrecognized compensation expense, weighted average period 2 years 7 months 6 days  
Time Based Restricted Stock Units
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Unrecognized compensation expense, weighted average period 2 years 6 months  
Vesting period 3 years  
Unrecognized compensation expense 28,000,000  
Performance-Based Restricted Stock Units
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Vesting period 3 years  
Unrecognized compensation expense $ 400,000  
Performance-Based Restricted Stock Units | Minimum
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Unrecognized compensation expense, weighted average period 1 year  
Performance-Based Restricted Stock Units | Maximum
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Unrecognized compensation expense, weighted average period 3 years